CN101608307B - Method for treating the surface of a high-strength steel mechanical part, and sealing system obtained by implementing said method - Google Patents
Method for treating the surface of a high-strength steel mechanical part, and sealing system obtained by implementing said method Download PDFInfo
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- CN101608307B CN101608307B CN2009101595969A CN200910159596A CN101608307B CN 101608307 B CN101608307 B CN 101608307B CN 2009101595969 A CN2009101595969 A CN 2009101595969A CN 200910159596 A CN200910159596 A CN 200910159596A CN 101608307 B CN101608307 B CN 101608307B
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
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- Other Surface Treatments For Metallic Materials (AREA)
- Lubricants (AREA)
- Gasket Seals (AREA)
- Rolling Contact Bearings (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
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Abstract
The invention relates to a method of treating the surface of a mechanical part made of high-strength steel, the method seeking to confer on said part friction and lubrication properties that are needed for its use. In accordance with the invention, the method comprises the following successive steps: a) subjecting the part (P) to a primary finishing step organized to lower its surface roughness (Ra) to a value less than or equal to a first predetermined threshold (S1); b) then subjecting the part (P) to surface cleaning by means of a degreasing solution; c) subjecting the part (P) as cleaned in this way to a tribo-finishing step organized firstly to further lower its surface roughness (Ra) to a value less than or equal to a second predetermined threshold (S2) that is less than the first predetermined threshold (S1), and secondly to increase its wettability by hydraulic fluids; and d) subjecting the part (P) to projection, at high speed and at ambient temperature, of tungsten bisulfide(WS2) powder in the form of platelets (p) that break, thereby creating a dense and self-lubricating deposit on the surface of said part.
Description
Technical field
The present invention relates to a kind of surface treatment method of the mechanical component of making by high-strength steel,, relate to a kind of tightness system that makes by described method simultaneously to give described part required frictional property and oilness in use.
Background technology
As everyone knows; required friction and lubricity when metal parts to be used; and it is carried out surface treatment; usual treatment process is an electrodeposited chromium, and electrodeposited chromium makes acquisition hard chromiumcoating become possibility, because its outstanding frictional behaviour; wear resistance; simultaneously can provide anticorrosive protection, it is widely used in a plurality of fields, for example aviation field.Electrodeposited chromium generally finishes by rectification, and even to guarantee coat-thickness, the roughness of condition of surface correspondence (Ra) is less than 0.2 micron (μ m).The success of above-mentioned technology can be interpreted as through behind such processing step, obtained following performance perameter: at first because the frictional strength of the excellence that good wear resistance and perfect condition of surface are brought, next is the oilness that has the excellence that causes owing to liquid, this will be owing to the micro-flaw effect, this effect takes place hard chromium, provides one to keep the district simultaneously.
Yet hard chrome plating need carry out in comprising the electrolyzer of chromic acid, and described chromic acid contains the hexavalent chromium (Cr to environment and human body harmful
6+).This material belongs to CMR class material (carcinogenic, induce mutant organism, deleterious to breeding).In addition, the same with most of electrolysis processs, this material is owing to the diffusion of hydrogen makes the steel embrittlement, and its requires to adopt preventive measures to avoid the paste spot that the bottom of steel occurs after the rectification, and these are stuck with paste spots and bring irreversible negative impact can for the metal parts of handling.
Summary of the invention
One object of the present invention is to provide a kind of surface treatment method that is used for substituting electrodeposited chromium, make to obtain high-grade frictional strength and obtain extraordinary wettability to become possibility, keep surfaceness (Ra) grade to be less than or equal to 0.2 μ m simultaneously by hydraulic liquid.
Another object of the present invention is to provide a kind of treatment process, makes the defective that overcomes the above-mentioned electrolytic process of mentioning become possibility, easier adaptation when relating to the different model mechanical component simultaneously.
Another object of the present invention is to provide a kind of hydraulic seal system, and this system comprises the sliding part that an above-mentioned surface treatment method of usefulness is handled.
Above mentioned technical problem solves by the surface treatment method that is used for the mechanical component of high-strength steel preparation provided by the invention, this method seeks to give frictional behaviour and lubricity required in the described part use, and described method comprises following consecutive steps:
A) reduce the surfaceness (Ra) of part to being less than or equal to first predetermined threshold value by elementary finishing step;
B) then, come the cleaning components surface by skim soln;
C) part after will cleaning further reduces its surfaceness (Ra) to being less than or equal to second predetermined threshold value by friction finishing step, and this value is lower than first predetermined threshold value, then improves its wettability by hydraulic liquid; And
D), make the tungsten disulfide (WS of the platelets form that part is subjected at a high speed and under the envrionment temperature
2) injection processing, platelets is pulverized, and forms fine and close thus and has the settled layer of self lubricity.
From above-mentioned treatment process, can observe, described method has been implemented a tungsten disulfide powderject processing steps, with before various same use tungsten disulfide powderject processing and be in particular the difference that there is essence in existing method that coating develops than the harder parting tool of part to be cut.About this point, but reference WO-A-2004/031433 and WO-A-2004/092429.Especially, in the treatment process of implementing in these documents, any defatting step in advance is not provided, simultaneously used the powder of being made up of spherical particle in tungsten disulfide powderject procedure of processing, described powder can be embedded in before to have used with powder particle has the corresponding recess that the particle of same size carries out ramming operation formation.
Opposite, among the present invention, used tungsten disulfide powder is the platelets form, their on the pending surface of part (described surfaces correspondingly be ready to and do not have bulb-shaped recess) are broken into the microparticle powder through high-velocity jet, and these particulates form the settled layer of a densification and self-lubricating on the surface.Therefore; thereby make the real blast of platelets become microparticle by spraying extremely thin platelets; thereby density final coating; the spherical powder particulate is inlayed and is not had comparability in this process and the prior art, and particle can be accepted in advance for this purpose and the recess prepared in the prior art.
Advantageously, friction finishing step c) comprises the first step c1 of deburring), this step is carried out deburring by continuous stirring part and first kind of aqueous solution comprising the oxidation of abrasive and is handled, up to obtaining default surfaceness (Ra), and then Pao Guang the second step c2), this step is subjected to continuous agitaion by non-oxidizing second aqueous solution that makes described part and comprise abrasive.Especially, friction finishing step c) comprises the third step c3 of cleaning surfaces), detect surfaceness (Ra) subsequently.
In a favourable enforcement, provide the first default roughness threshold value to equal 0.2 μ m in fact, the second default roughness threshold value equals 0.1 μ m in fact.
Equally advantageously, being used in the step d) sprayed processed powders basically all by pure WS
2Form, it is essentially the form of hexagonal platelets for shape, and its principal dimension is between 0.8 μ m to 1.5 μ m, and requirement has the thickness of 0.1 μ m.
Equally advantageously, the method that provides comprises, after friction finishing step c), and the additional step c ' that little ramming is handled), be used for activating piece surface to be increased in following step d) and WS
2The sticking power of coating deposited behind the powder processing.
In some cases, advantageously, little ramming treatment step c ') back immediately following a surface cleaning c "), then detect surfaceness (Ra).
Equally preferably, little ramming treatment step c ') implement in the following manner, promptly surfaceness (Ra) because of little ramming handle increase after, still keep below the first default roughness threshold value.
In some cases, advantageously, little ramming treatment step c ') to implement with the non-oxidized substance particle, particle size is between 5 μ m to 15 μ m.
At last preferably, method comprises WS
2After the powder processing step d), immediately following a surface cleaning d '), then detect surfaceness (Ra), wettability and frictional coefficient.
The present invention also provides a kind of hydraulic seal system, this system comprises a sliding bar that slides in seal assembly, seal assembly in the described system comprises a pilot bearing by first kind of material preparation, the gasket seal by second kind of material preparation, second kind of material hardness is lower than first kind of material, wherein the outside surface of sliding bar has been implemented the method that comprises at least a above-mentioned feature, therefore, described bar have with pilot bearing be complementary required oilness and with the gasket seal required frictional behaviour that is complementary.
Especially, the first kind of material that constitutes guide bearing is a kind of thermoplastic polymer, and the second kind of material that constitutes gasket seal is rubber.
Other features and advantages of the present invention will more clearly be described by content, accompanying drawing and the relevant special embodiment of specification sheets back.
Description of drawings
Each picture in the accompanying drawing has been carried out following explanation:
Fig. 1 has shown a plurality of steps in the treatment process of the present invention, handles intermediate steps and selectable cleaning comprising selectable little ramming;
Fig. 2 is the Photomicrograph that is obtained by electron microscope, has shown the tungsten disulfide powder of the High-speed machining at ambient temperature that uses in a spot of method of the present invention, and described powder is made up of platelets;
Fig. 3 has shown an independently hexagon platelets that is used to form described tungsten disulfide powder;
Fig. 4 has shown the raising of wettability by a correlation curve is provided, Gu the polynary curve display of drawing out liquid/wetting angle be time to time change how;
Fig. 5 is an axial, cross-sectional view, has shown a foundation hydraulic seal of the present invention system, and this system obtains by implementing above-mentioned special treatment process.
Embodiment
Be the specific descriptions of consecutive steps of the surface treatment method of the mechanical component that are used for high-strength steel preparation of the present invention below, this method attempts to give frictional property and oilness required in the described part use.
Described mechanical component are labeled as P, for example are made of the stainless steel friction lever, for being applicable to the type of launch vehicle brake piston.Naturally, the present invention is not limited to a certain special mechanical component type.
In Fig. 1, can see first step of treatment process of the present invention, shown in scheming a).The metal parts of beginning is a steel components, and preferred stainless steel promptly has high strength, and its hardness is not less than 30HRC (being Rockwell Hardness C mark).Generally speaking this part makes its hardness reach the typical requirement of 34HRC to 39HRC by suitable thermal treatment, and perhaps by low temperature carburization, or the such thermo-chemical treatment of low temperature nitriding is to keep the stainless steel performance.
In step a), the surfaceness (Ra) that reduces part P by elementary finishing step for example is 0.2 μ m to being less than or equal to the first predetermined threshold value S1.After part P process machining and the such mode of processing (thermochemistry or passivation mode) are handled, obtain its net shape and size.Common elementary finishing step comprises steps such as turning, adjustment, can guarantee that just the roughness Ra of part is lower than 0.2 μ m, for example, in case after part is finished, just prepare to carry out subsequent disposal.Reiterate that the parameter Ra that is used to characterize surfaceness here is the parameter of a presentation surface geometrical defect, is equivalent to the arithmetical av of deviation in the roughness reference line.
In step b), part P cleans its surface by degreasing solution.This operation is important, and it can make part P clean various possible spot vestiges (smear metal, dust, plastic residues, soft flocks provides the material of temporary protection for lipid, oil) up hill and dale.Degreasing solution preferentially uses alkalescence, and uses 35 ℃ to 60 ℃ temperature range.The step of the deoiling time length is generally 5min.Naturally, when the spot grade is very high,, possibly metal parts is adopted the operation of deoiling in advance in order to reduce the processing required time that deoils.
In follow-up step, be defined as c), the part P after the cleaning at first further reduces its surface roughness Ra to being less than or equal to the second predetermined threshold value S2 by friction finishing step, this value is lower than the first predetermined threshold value S1, then improves its wettability by hydraulic liquid.Especially, described hydraulic liquid is by hydrocarbon or phosphoric acid ester, and perhaps oily liquids constitutes.
Described friction finishing step is to implement to prepare and optimize the basis of metal parts condition of surface before the processing of tungsten disulfide powder processing.
As shown in Figure 1, advantageously, friction finishing step c) comprises the first step c1 of deburring), the second step c2 of polishing), the third step c3 of cleaning surfaces) and, detect surfaceness thereupon.
The step c1 of deburring) comprising that continuous stirring part P handles, generally is to carry out in the vibration tube, adds first kind of aqueous solution of the oxidation that comprises abrasive simultaneously, up to obtaining default surface roughness Ra.In this step, piece surface has formed an oxide film, and the hardness of film is lower than its hardness of metal down.Utilize the mechanical effect of abrasive that film is divested gradually, the hardness of described abrasive is higher than film, but is lower than following metal, by the effect of abrasive to piece surface, has reduced the roughness on described surface.As example, first step c1) the lasting enforcement time of deburring is no less than 60min.
The second step c2 of polishing) preferably includes continuous stirring part polishing, add the non-oxidizing second kind of aqueous solution that comprises abrasive simultaneously.The polishing of second step is intended to remove all at first step c1) in the oxide film that forms of mechanical effect by abrasive.As example, the second step c2 of polishing) the lasting enforcement time is no less than 120min.
Step c1) and c2) after finishing, surface roughness Ra is reduced to is less than or equal to the second predetermined threshold value S2, for example about 0.1 μ m, and S2 is lower than the first predetermined threshold value S1.Advantageously, provide step c3) with the clean surface, detect the step of surfaceness (Ra) thereupon, through clean before, described detection will be very reliable.Described cleaning attempts to guarantee that detected result can represent the observed value of surfaceness.When the spot of piece surface is less than elementary finishing step a) and finishes, so can get final product as acetone by using the not too strong solvent of erosion.
After friction finishing step c) finishes, both part P directly can be entered the ensuing d of being defined as) basic step, be included in the operation of spraying the tungsten disulfide powder of platelets form under high speed and the envrionment temperature, also can make adjustment, before step d), implement an additional little ramming treatment step, can and detect surfaceness followed by cleaning surfaces.This additional c of being defined as ') step is a little ramming treatment step, is used to activate part P surface to increase WS
2The sticking power of deposited coatings after the step d) of powderject, the step c ' of described increase) back step c immediately following a cleaning surfaces and detection surface roughness Ra ").Among Fig. 1, jet pipe 10 is little ramming by the signal symbol, and particle acts on the part P, and these non-oxide particles generally have the size between 5 μ m to 15 μ m, preferred 10 μ m.Step c ') particle acts under high speed in, and it is by applying the pressure acquisition of 5 crust to 10 crust, and the work inclination angle of injection is basically between 45 ° to 135 °.
Naturally, so little sandblast step can improve surface roughness Ra slightly.Yet, design little ramming treatment step c ') time guaranteed that surfaceness continues to remain on the first default roughness threshold value S1, as 0.2 μ m, below.
Among Fig. 1, step c ") detect surface roughness Ra and be reduced to an arrow that points to part P by symbol.With above-mentioned steps c3) the same, cleaning surfaces is to carry out before detecting surfaceness, for example uses the acetone solvent of no erosion, to guarantee to obtain the representative result of better detecting operation.
Whether implement little sandblast step and depend on the frictional behaviour that metal parts goes for, also have above mentioned wettability in addition.In these areas, carried out little sandblast, will be more suitable for implementation step d promptly) in WS
2Powder processing for example, only need be no more than the time-delay of 120min.
After friction finishing step c) finishes, perhaps may be little ramming treatment step c ') and cleaning and detect step c ") finish after, the part P for preparing through the best comes into effect and sprays the tungsten disulfide powder.Through friction finishing step, the roughness relevant with final operation obviously reduces, if also pass through little sandblasting, the surface is activated so, is about to the also corresponding raising of coating adhesion that forms.
In step d), part P is carrying out tungsten disulfide powder (WS at a high speed and under the envrionment temperature
2) injection processing.
According to the essential characteristic of invention, the WS that uses in the inventive method
2Powder is a platelets
pForm, shown in Fig. 2 and 3, produced a technical role thus, fundamentally be different from acquired technical role in those prior aries, these prior aries have also been used WS
2Powderject, these technology comprise spray ball sprills particle, and these are particle studded on the knife part of preparing before with powder reception recess.And comprising of disclosure provides the recess that receives spherical particle,
In fact hintedCan reduce the limited amount of surfaceness, too little roughness value can be got rid of powder reception recess at present, and can stop spherical WS
2Powder is inlayed.Especially, when this method use by the powder of platelets preparation then different fully, for example with extremely thin platelets along with contacting after being fragmented into microparticle with piece surface.
Preferably, the used actual shape of platelets p is a hexagon, and as shown in Figure 3, its principal dimension is labeled as D, and mainly between 0.8 μ m to 1.5 μ m, its thickness is labeled as E, and requirement is 0.1 μ m.When these plateletss
pSpray processing by jet pipe (being labeled as 20 among Fig. 1), they form a settled layer along with contacting with the surface and being ground into microparticle at described piece surface, described settled layer densification and self-lubricating.
As example, for spraying WS with sheet form, low temperature and high speed
2The processing conditions of the machining state of powder, may require to apply to the pressure between 10 crust between 5 crust, inclination angle between nozzle and pending working face is between 45 ° to 135 °, and the distance between the injection jet pipe outside and the part P is usually between between the 20mm to 100mm.Such processing conditions is guaranteed sheet WS
2Impinge upon on the pending piece surface and be ground into microparticle thereby powder is injected under high speed.
Applicant's test shows obtains the coating of thickness between 0.4 μ m to 0.6 μ m easily, and WS
2Gu the liquid/wetting angle of coatingsurface changes (can't realize in this prior art of mentioning) in the above in perfect reproducible mode.Parts processed then presents pewter, and this is the perfect uniformly sign of thickness of deposits.The suitable processing that the visual detection of part color has been guaranteed to carry out, and the possibility that in fact obtained of default characteristic.
And as shown in Figure 1, also the method that may provide comprises, at WS
2Powderject processing steps d) after, be the steps d of a cleaning surfaces '), then detect.As step c3 before) with c ") the same, cleaning surfaces uses the not too strong solvent of erosion, gets final product as acetone, thereby obtains the representative result of better detecting operation.
Before using parts processed, implement this final step very big advantage is arranged, it provides three kinds of detections especially, be illustrated as three arrows in the drawings, relate separately to surfaceness, the wettability of hydraulic liquid is particularly based on hydrocarbon or phosphoric acid ester, the perhaps hydraulic liquid of oily liquids, and frictional coefficient (static state and/or dynamic).
This has guaranteed that the parts processed that obtains has the Ra value that is lower than 0.2 μ m, is lower than 0.03 kinetic friction coefficient (WS
2To WS
2And face and face), and the static friction coefficient (WS that is lower than 0.07
2To WS
2And face and face).
The wettability that obtains also has the very good property distinguished to present hydraulic fluid, particularly is applicable to based on hydrocarbon or phosphoric acid ester, and the perhaps hydraulic liquid of oily liquids is for liquid, aqueous then relatively poor.
Fig. 4 has shown the WS that obtains according to the present invention
2Coating, its wettability is improved.
Thus obtained coating, its frictional coefficient is very low, simultaneously because the generation of piece surface continuous film, can self-lubricating, and these can take place in the temperature range of a non-constant width, and coating has lipotropy and hydrophobic nature.Compare with the electrolytic process that above-mentioned prior art is used, have obvious improvement.
As reference Fig. 5, a hydraulic seal system has been described, this system obtains by implementing surface treatment method of the present invention.
In Fig. 5,100 the hydraulic seal system of being labeled as comprises a sliding bar 101 by the X-axis of high strength stainless steel preparation, and this sliding bar slides in tightness system 102.Seal assembly 102 is arranged in chamber 106, and chamber 106 is formed in the load-carrying unit 105, is arranged in the middle of shoulder 107 and 108.
The outside surface 110 of bar 101 has been implemented above-mentioned a kind of treatment process, so described bar has required performance, both because of having oilness with guide bearing 103 couplings, promptly at the interface at the internal surface 103.1 of the outside surface 110 of bar 101 and pilot bearing 103, again because of having frictional property with gasket seal 104 couplings, promptly at the interface, to avoid wearing and tearing at the internal surface 104.1 of the outside surface 110 of bar 101 and gasket seal 104.
The WS that is used for sliding bar 101
2The dual-use function of coating is optimized matable assembly 103,104 and has been formed seal assembly 102.
Described hydraulic seal system is specially adapted to the launch vehicle brake piston.
Can be used in particular for the friction lever in the piston of hydraulic pressure ring of flyer stopper.The effect of friction lever is when applying damping force in brake(-holder) block (s) time guiding piston, bar and guide bearing of being made by tetrafluoroethylene and the tightness system of being made up of the gasket seal that second third synthetic rubber is made.Such bar/pad system can satisfy most of requirements, particularly demonstrates excellent friction behavior with the friction that reduces pad with to the infringement of bar, has shown the good seal performance for piston hydraulic pressure liquid simultaneously.
The present invention is not limited to above-mentioned embodiment, and the equivalent method of all derivations that comprises the essential characteristic of afore mentioned rules all belongs to the category of the present invention's protection.
Claims (12)
1. the surface treatment method of the mechanical component made of a high-strength steel, required frictional property and oilness in the described part use of described method afford, described method comprises following consecutive steps:
A) by elementary finishing step part (P) is processed its surfaceness of reduction (Ra) to being less than or equal to first predetermined threshold value (S1);
B) then, come cleaning components (P) surface by skim soln;
C) part (P) after will cleaning at first further reduces its surfaceness (Ra) to being less than or equal to second predetermined threshold value (S2) by friction finishing step, and this value is lower than first predetermined threshold value (S1), then improves its wettability by hydraulic fluid; And
D) at a high speed and under the envrionment temperature, make described part (P) be subjected to platelets (
p) tungsten disulfide (WS of form
2) jetting action of powder, platelets is pulverized, and forms the settled layer of a densification and self-lubricating thus at piece surface.
2. the method for claim 1, it is characterized in that: friction finishing step c) comprises the first step c1 of deburring), this step is carried out deburring by the first kind of aqueous solution that stirs continuously part (P) and comprise the oxidation of abrasive and is handled, up to obtaining default surfaceness (Ra), and then Pao Guang the second step c2), this step is polished by the described part of continuous stirring and non-oxidizing second kind of aqueous solution of comprising abrasive.
3. method as claimed in claim 2 is characterized in that: friction finishing step c) comprises the third step c3 of cleaning surfaces), detect surfaceness (Ra) subsequently.
4. as each described method among the claim 1-3, it is characterized in that: the first default roughness threshold value (S1) equals 0.2 μ m, and the second default roughness threshold value (S2) equals 0.1 μ m.
5. the method for claim 1, it is characterized in that: the powder of the injection in the step d) is basically by pure WS
2Form, its be platelets (
p) form exist, be shaped as hexagon, its dimension D has the thickness E of 0.1 μ m between 0.8 μ m to 1.5 μ m.
6. the method for claim 1 is characterized in that: after friction finishing step c), described method comprises the additional step c ' that little ramming is handled), this step is configured to activate part (P) surface to increase WS in the step d)
2The sticking power of deposited coatings behind the powder processing.
7. method as claimed in claim 6 is characterized in that: little ramming treatment step c ') back is immediately following a surface cleaning c "), detect surfaceness (Ra) afterwards.
8. as claim 6 or 7 described methods, it is characterized in that: little ramming treatment step c ') implement in the following manner, surfaceness (Ra) because of little ramming handle improve after, still keep below the first default roughness threshold value (S1).
9. method as claimed in claim 6 is characterized in that: little ramming treatment step c ') implement with the non-oxidized substance particle, particle size is between 5 μ m to 15 μ m.
10. the method for claim 1 is characterized in that: WS
2After the powder processing step d), immediately following a surface cleaning d '), then detect surfaceness (Ra), wettability and frictional coefficient.
11. hydraulic seal system, comprise a sliding bar (101) that in seal assembly (102), slides, seal assembly in the described system (102) comprises a pilot bearing by first kind of material preparation (103), gasket seal (104) by second kind of material preparation, second kind of material hardness is lower than first kind of material, wherein the outside surface (110) of sliding bar (101) has been implemented according to each described method among the claim 1-10, and described thus bar has oilness that required and pilot bearing (103) be complementary and the frictional behaviour that is complementary with gasket seal (104).
12. system as claimed in claim 11 is characterized in that: the first kind of material that constitutes pilot bearing (103) is a kind of thermoplastic polymer, and the second kind of material that constitutes gasket seal (104) is rubber.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0803093A FR2932193B1 (en) | 2008-06-04 | 2008-06-04 | METHOD FOR SURFACE TREATMENT OF A HIGH STRENGTH STEEL MECHANICAL PIECE, AND SEALING SYSTEM OBTAINED BY CARRYING OUT SAID METHOD |
| FR0803093 | 2008-06-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101608307A CN101608307A (en) | 2009-12-23 |
| CN101608307B true CN101608307B (en) | 2011-03-16 |
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| CN2009101595969A Active CN101608307B (en) | 2008-06-04 | 2009-06-04 | Method for treating the surface of a high-strength steel mechanical part, and sealing system obtained by implementing said method |
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|---|---|
| US (1) | US8128991B2 (en) |
| EP (1) | EP2130944B1 (en) |
| JP (1) | JP5215241B2 (en) |
| CN (1) | CN101608307B (en) |
| AT (1) | ATE488619T1 (en) |
| AU (1) | AU2009202212B2 (en) |
| BR (1) | BRPI0902016A2 (en) |
| CA (1) | CA2668502C (en) |
| DE (1) | DE602009000370D1 (en) |
| ES (1) | ES2354936T3 (en) |
| FR (1) | FR2932193B1 (en) |
| MX (1) | MX2009005871A (en) |
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| CN102513900A (en) * | 2011-10-28 | 2012-06-27 | 大连海事大学 | Method for strengthening internal surface of air cylinder sleeve by virtue of surface micro-etching and particle composite filling |
| FR2983546B1 (en) * | 2011-12-06 | 2014-04-11 | Sagem Defense Securite | MECHANICAL BODY |
| CZ307120B6 (en) * | 2013-02-15 | 2018-01-24 | Západočeská Univerzita V Plzni | A method and a device for producing surfaces of high roughness and specific mechanical properties |
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| FR3014428B1 (en) * | 2013-12-06 | 2017-05-12 | Sofiplast | PROCESS FOR MANUFACTURING A GLASS CONTAINER |
| CN104647171B (en) * | 2015-02-13 | 2017-01-25 | 佛山市建春友金属科技有限公司 | Surface treatment method for stainless steel plate with high cleanness and corrosion resistance |
| CN105970127B (en) * | 2016-05-25 | 2018-01-12 | 南京航空航天大学 | A kind of method for realizing biphase titanium alloy tubular member surfaces externally and internally nanosizing structure |
| FR3123012A1 (en) * | 2021-05-20 | 2022-11-25 | Safran Landing Systems | SURFACE TREATMENT METHOD OF A PISTON ROD |
| CN115823191A (en) * | 2022-09-23 | 2023-03-21 | 广东极亚精机科技有限公司 | RV speed reducer |
| CN116445902B (en) * | 2023-06-15 | 2023-09-05 | 上海毫米星光光学有限公司 | Aluminum alloy polygon mirror processing method applied to rotary scanning optical system |
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-
2008
- 2008-06-04 FR FR0803093A patent/FR2932193B1/en active Active
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- 2009-05-15 ES ES09290361T patent/ES2354936T3/en active Active
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| JP5215241B2 (en) | 2013-06-19 |
| CA2668502A1 (en) | 2009-12-04 |
| CA2668502C (en) | 2011-08-09 |
| DE602009000370D1 (en) | 2010-12-30 |
| FR2932193A1 (en) | 2009-12-11 |
| ES2354936T3 (en) | 2011-03-21 |
| FR2932193B1 (en) | 2010-07-30 |
| JP2009293128A (en) | 2009-12-17 |
| EP2130944A1 (en) | 2009-12-09 |
| AU2009202212A1 (en) | 2009-12-24 |
| AU2009202212B2 (en) | 2010-07-01 |
| MX2009005871A (en) | 2010-01-15 |
| US8128991B2 (en) | 2012-03-06 |
| BRPI0902016A2 (en) | 2010-04-13 |
| ATE488619T1 (en) | 2010-12-15 |
| US20090302550A1 (en) | 2009-12-10 |
| EP2130944B1 (en) | 2010-11-17 |
| CN101608307A (en) | 2009-12-23 |
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